/*
 * Copyright (c) 2009, Katholieke Universiteit Leuven
 *
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 *     * Redistributions of source code must retain the above copyright notice,
 *       this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright notice,
 *       this list of conditions and the following disclaimer in the documentation
 *       and/or other materials provided with the distribution.
 *     * Neither the name of the Katholieke Universiteit Leuven nor the names of
 *       its contributors may be used to endorse or promote products derived from
 *       this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package be.kuleuven.cs.distrinet.wsn.looci.networkmanager;

import java.io.IOException;
import java.net.Inet6Address;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.ArrayList;
import java.util.List;

import javax.xml.ws.Endpoint;

import be.kuleuven.cs.distrinet.wsn.looci.networkmanager.webservice.WebServiceFacade;

public class ContikiNetworkManager implements INetworkManager {

	private String sendcomponent;
	private String componentdir = "components";
	
	public ContikiNetworkManager() {
		sendcomponent = System.getProperty("looci.contiki.sendcomponent");
		System.out.println("Using sendcomponent utility at " + sendcomponent);
	}

	private boolean checkIfIPv6(String ta) {
		InetAddress addr;
		try {
			addr = InetAddress.getByName(ta);
		} catch (UnknownHostException e) {
			return false;
		}
		if(addr instanceof Inet6Address) {
			return true;
		} else {
			return false;
		}
	}

	private boolean deployComponent(String ta, String cn) {
		// Check whether the target is an ipv6 address
		if(!checkIfIPv6(ta)) {
			// for all things we don't know, we act as a dummy networkmanager
			// just to be able to test with a small number of nodes
			return true; 
		}
		// Compose the command to execute
		String command = sendcomponent + " " + cn + " " + componentdir+"/"+cn+".comp " + ta;
		try {
			Process p = Runtime.getRuntime().exec(command);
			if(p.waitFor()!=0) {
				return false;
			} else {
				return true;
			}
		} catch (IOException e) {
			return false;
		} catch (InterruptedException e) {
			return false;
		}
	}
	
	@Override
	public List<String> deployComponent(List<String> targets,
			String componentName) {
		List<String> result = new ArrayList<String>();
		for(String target: targets) {
			System.out.println("Trying to deploy " + componentName + " to " + target);
			if(deployComponent(target, componentName)) {
				System.out.println("Successfully deployed to " + target);
				result.add(target);
			} else {
				System.out.println("Failed to deploy to " + target);
			}
		}
		return result;
	}

	@Override
	public List<String> startComponent(List<String> targets,
			String componentName) {
		// TODO Contiki implementation starts components automatically at deployment time
		return new ArrayList<String>(targets);
	}

	@Override
	public List<String> stopComponent(List<String> targets, String componentName) {
		// TODO We don't support this yet
		return new ArrayList<String>(targets);
	}

	@Override
	public List<String> undeployComponent(List<String> targets,
			String componentName) {
		// TODO We don't support this yet
		return new ArrayList<String>(targets);
	}

	public static void main(String[] args) {
		final INetworkManager nm = new ContikiNetworkManager();
		
		WebServiceFacade wsFacade = new WebServiceFacade(nm);
        Endpoint.publish("http://localhost:8080/LooCINetworkManagerWS", wsFacade);
	}
	
}
